A method for predicting the phase spectra of strong ground motion is presented based on the equivalent dispersion of wave motion and the approach for synthesizing ground motions is then studied.
本文在强震地震波频散研究的基础上，进行了强地震动场相位预测方法和多点地面运动时程合成方法的研究。
Based on the coupled-mode theory, the transfer-matrix method is used to calculate the transmission spectra of phase-shifted long-period fiber gratings (LPFG).
应用耦合模理论和传输矩阵法计算模拟了长周期光纤光栅的透射谱，并对其进行了切趾优化。
Also we proposed a multiple image encryption scheme by shifting the multiple central parts of spectra together with the double random phase encodingtechnique.
另外我们采用多图像中心频谱平移和双随机位相编码提出了一种多图像加密算法。
Aimed at 2dpsk modulation, the cross spectra demodulation method that obtains relative phase information through calculating the cross spectra of two neighboring symbol signals is proposed.
针对2DPSK调制方式，提出了通过对相邻两个码元信号求互谱来获取相对相位信息的互谱解调法。
The IR spectra indicate that the matrix formed by aluminosilicate gel phase due to the polymerization has possibly the microstructures similar to that of opal.
制品的红外光谱分析表明聚合反应的产物，即铝硅酸盐凝胶相脱水固化而形成的基体相，很可能具有与蛋白石相类似的微观结构。
By the ZY system Raman spectra the phase structures are determined.
根据拉曼光谱判定了ZY系统的相结构。
For all the specimens, liquid phase separation structures were observed generally by SEM and a comparison between basic glaze and glaze of change color was made by Visible spectra.
用扫描电镜观察了全部试样的液相分离结构并比较了基础釉和变色釉的可见光谱。
The analytical expressions of the error spectra caused by random errors in the measurement of amplitude and phase of the near field in planar near field measurements are presented.
导出了平面近场测量中近场幅相随机误差所引起的误差谱的解析表达式。
The condition and power gain spectra of modulation instability induced by the cross-phase modulation in the case of cubic-quintic nonlinearity are analyzed.
分析了三、五阶非线性共存时的交叉相位调制不稳定条件和增益谱。
Two new complexes of L-lysine, L-threonine and Arsenic triiodide were synthesized by the solid phase reaction and characterized by elemental analysis, XRD, UV spectra and IR spectra.
以L-赖氨酸、L-苏氨酸和三碘化砷为原料，采用室温固相合成法合成了两种新型氨基酸砷配合物。
Using Raman scattering spectra, the lattice vibration and structural phase transition of LiTa 0.
晶体的晶体振动及其高温下发生的由铁电相到顺电相的结构相变。
Using Raman scattering spectra, the lattice vibration and structural phase transition of LiTa 0.
晶体的晶体振动及其高温下发生的由铁电相到顺电相的结构相变。
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